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Temperature will directly affect the melting speed of TPU hot melt adhesive film
​Different from traditional hot melt adhesive products, the thickness of TPU hot melt adhesive film is very thin, usually between 0.02mm-0.1mm. Such a thin film has a very fast internal temperature conduction speed, so its requirements for temperature control accuracy are higher than other hot melt adhesive products. Similar hot-melt adhesive films also have this feature. Since the thickness of the TPU hot melt adhesive film is thin and the temperature is higher or lower, it will directly affect the melting speed of the TPU hot melt adhesive film, which will in turn affect the fluidity of the TPU hot melt adhesive film and the humidity of the material surface, which will affect the TPU hot melt adhesive film. The bonding effect and bonding strength of the film have a certain impact.
2023-09-11
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Temperature will directly affect the melting speed of TPU hot melt adhesive film

    Different from traditional hot melt adhesive products, the thickness of TPU hot melt adhesive film is very thin, usually between 0.02mm-0.1mm. Such a thin film has a very fast internal temperature conduction speed, so its requirements for temperature control accuracy are higher than other hot melt adhesive products. Similar hot-melt adhesive films also have this feature. Since the thickness of the TPU hot melt adhesive film is thin and the temperature is higher or lower, it will directly affect the melting speed of the TPU hot melt adhesive film, which will in turn affect the fluidity of the TPU hot melt adhesive film and the humidity of the material surface, which will affect the TPU hot melt adhesive film. The bonding effect and bonding strength of the film have a certain impact.

    TPU hot melt adhesive film is a kind of thermal adhesive. It has stable performance at normal temperature and does not have adhesive force. However, the condition for producing adhesive force is to heat it, and then when it reaches the corresponding temperature and melting point , cooling after melting achieves the effect of an adhesive, so the TPU hot melt adhesive film can melt.

    TPU hot melt adhesive film has strong adhesion and is resistant to washing, dry cleaning, etc. , so TPU hot melt adhesive film is widely used in the clothing industry. TPU hot melt adhesive film is in a solid state when filled at room temperature, and becomes sticky when heated to a certain temperature. Due to differences in bonding materials and composite environments, there will be certain differences in how they are used. TPU hot melt adhesive film manufacturers produce hot melt adhesive films, hot melt adhesive films and other hot melt adhesive products. It is a raw material production supplier. Products such as TPU hot melt adhesive film and hot melt adhesive mesh film are industrial adhesives and can be used as composite materials. There are many domestic TPU hot melt adhesive film manufacturers, and the scale of the manufacturers varies.

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TPU hot melt adhesive film vs anaerobic adhesive: "Scene flexibility" difference in automotive interior bonding
2025-09-11
​From the perspective of curing conditions, TPU hot melt adhesive film does not need to rely on special environments, while anaerobic adhesives are severely restricted by "auerobicity". The curing principle of anaerobic glue is to undergo polymerization under conditions of lack of oxygen and catalyzed by metal ions (such as iron and copper). If it is in an environment where air circulation or metal substrates are not available, the curing speed will be greatly slowed down or even unable to cure. In automotive interiors, most bonding scenarios are "open" (such as bonding the door panel skin to PP substrate, and the ceiling fabric to the sponge), the air can freely contact the bonding surface, and the substrate is mostly non-metallic (PP, ABS, fabric, etc.), lacking metal ion catalysis, and additional catalyst is required when using anaerobic glue, and the curing time is as long as several hours, which is difficult to meet the needs of industrial production. The TPU hot melt adhesive film only needs to be melted by heating (120-160℃) and can be cured after pressurization and cooling. It does not need to rely on the ambient oxygen concentration or the base material. It can be cured stably in open or closed bonding scenarios, and the curing time only takes a few dozen seconds to a few minutes, adapting to the fast-paced needs of the interior production line.
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